0.2.0: Shared Fast Mode and Pi 1.0 Baseline

• Split the monolithic extension into cohesive lib/ domains matching Codex Usage: composition, status lifecycle, shared state, OAuth query, quota normalization, formatting, Telegram and Fast. index.ts now only re-exports the unchanged public API; tests follow domain owners. Quota/auth/leadership, mutex/fencing/backoff, status redraw and Fast behavior are preserved.
• Added an argument-free /fast provider handler through @llblab/pi-command-fast@^0.1.0, sharing exactly one command with Codex Usage across load orders, duplicate dependency copies, independent sessions and reloads. Claude eligibility is restricted to the Opus family without a version allowlist; other families receive Fast mode is supported only for Opus without writes or quota requests, and stale unsupported overrides do not decorate status or activate the request bridge. Generic command dispatch and Codex eligibility are unchanged.
• Persisted speed: "fast" solely in the current Anthropic model override; OFF deletes it. The shared JSONC helper preserves comments and unrelated configuration with atomic replacement.
• Requires Pi ≥1.0.0 across coding-agent, AI and agent-core peers: older Anthropic transports do not expose the same assembled beta payload contract. Adapted native payloads with Fast speed and additive fast-mode-2026-02-01 beta, preserving explicit speed and Pi-generated/configured betas through actual HTTP assembly. No provider replacement or header-default suppression.
• Appended dim lowercase fast at the final terminal status boundary, including loading/error/n/a paths, with immediate silent redraw and no quota request. OAuth quota polling, SQLite mutex, claim fencing, stale display, retry/backoff, and Telegram remain unchanged. Tests now live in tests/.